DS1338 I2C RTC with 56-Byte NV RAM
TYPICAL OPERATING CHARACTERISTICS
ICC vs. VCC
IBAT vs. VBAT
VCC=0V
RS1=RS0=1
250
1250
SCL=400kHz
1200
1150
1100
1050
1000
950
225
200
175
150
125
100
75
IBATOSC2
(SQWE = 1)
SCL=SDA=0Hz
IBATOSC
(SQWE= 0)
1
900
850
800
750
700
650
600
550
50
1.3 1.8 2.3 2.8 3.3 3.8 4.3 4.8 5.3
VBAT (V)
1.8
2.3
2.8
3.3 3.8
VCC (V)
4.3
4.8
5.3
VCC=0V
VCC=0V
IBAT vs. Temperature
Oscillator Frequency vs. Supply Voltage
VBAT = 3.0V
32768.5
32768.4
32768.3
32768.2
32768.1
32768.0
32767.9
1000
950
900
850
800
750
700
650
600
SQWE=1
SQWE=0
1.3 1.8 2.3 2.8 3.3 3.8 4.3 4.8
Oscillator Supply Voltage (V)
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
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